ToolVet
15trust / 100

Payment Check

by bruk-agent-api.fly.dev in Markets & finance

x402 APIFailing, checked 57 min ago

Verifies that an XRP Ledger payment settled as expected: validation, result code, destination, destination tag, currency, issuer, and the amount actually delivered, which exposes partial-payment tricks. Useful when confirming that a customer or counterparty really paid.

GET
https://bruk-agent-api.fly.dev/v1/payment-check
Price
$0.01
per call in USDC
Uptime
0.0%
last 30 days
Response time
-
no timed checks yet
Last check
Failed
57 min ago, next in 5 min

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Latest check failed 57 min ago: Amount "0.01" is not in atomic token units

Status and outage history · Atom feed · Watch with other listings

How to call it

GET https://bruk-agent-api.fly.dev/v1/payment-check

Each call costs $0.01 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

GET https://bruk-agent-api.fly.dev/v1/payment-check?tx=CCA2528E8BE7B3C50640BD8CB0A624555D5952DAD51843C0913A904E0FD690E7

Parameters

ParameterTypeRequiredDescription
amountstringNoExpected delivered amount, decimal, e.g. 25 or 25.5.
currencystringNoExpected currency, e.g. XRP or RLUSD.
destinationstringNoExpected receiving r-address.
destination_tagstringNoExpected destination tag.
issuerstringNoExpected token issuer r-address.
networkstringNoXRP Ledger network. Default mainnet. One of: mainnet, testnet.
txstringYes64-character transaction hash.

Example response

The provider's example. We can't check it without paying.

Example response, 55 lines
{
  "answer": {
    "checks": [
      {
        "check": "destination",
        "expected": "rDAE53VfMvftPB4ogpWGWvzkQxfht6JPxr",
        "observed": "rDAE53VfMvftPB4ogpWGWvzkQxfht6JPxr",
        "pass": true
      },
      {
        "check": "currency",
        "expected": "XRP",
        "observed": "XRP",
        "pass": true
      }
    ],
    "observed": {
      "delivered": {
        "currency": "XRP",
        "issuer": null,
        "value": "189186.690765"
      },
      "destination_tag": 0,
      "from": "rNxp4h8apvRis6mJf9Sh8C6iRxfrDWN7AV",
      "partial_payment_flag": false,
      "stated_amount_field": {
        "currency": "XRP",
        "issuer": null,
        "value": "189186.690765"
      },
      "to": "rDAE53VfMvftPB4ogpWGWvzkQxfht6JPxr"
    },
    "verdict": "settled_as_expected",
    "warnings": []
  },
  "checked_at": "2026-10-18T03:48:42+00:00",
  "proof": {
    "close_time": "2026-10-18T03:45:02+00:00",
    "ledger_index": 107731381,
    "network": "xrpl:0 (mainnet)",
    "sources": [
      {
        "method": "tx",
        "name": "XRP Ledger public server",
        "url": "https://s1.ripple.com:51234/"
      }
    ],
    "transaction": "CCA2528E8BE7B3C50640BD8CB0A624555D5952DAD51843C0913A904E0FD690E7",
    "validated": true
  },
  "service": "payment_check",
  "unknowns": [
    "Who controls the sending or receiving address (the ledger does not record identity)."
  ]
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://bruk-agent-api.fly.dev/v1/payment-check?tx=CCA2528E8BE7B3C50640BD8CB0A624555D5952DAD51843C0913A904E0FD690E7'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://bruk-agent-api.fly.dev/v1/payment-check?tx=CCA2528E8BE7B3C50640BD8CB0A624555D5952DAD51843C0913A904E0FD690E7' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fbruk-agent-api.fly.dev%2Fv1%2Fpayment-check
const res = await pay("https://bruk-agent-api.fly.dev/v1/payment-check?tx=CCA2528E8BE7B3C50640BD8CB0A624555D5952DAD51843C0913A904E0FD690E7");
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://bruk-agent-api.fly.dev/v1/payment-check?tx=CCA2528E8BE7B3C50640BD8CB0A624555D5952DAD51843C0913A904E0FD690E7")
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
57 min agoAmount "0.01" is not in atomic token units402433 ms$0.01
6 h agoAmount "0.01" is not in atomic token units402209 ms$0.01
11 h agoAmount "0.01" is not in atomic token units402277 ms$0.01